Brain Teasers Optical Illusions Puzzle Hunts Codes & Ciphers Mechanical Puzzles
Personal Links
Browse Teasers
Search Teasers

The Eight Queens

Logic puzzles require you to think. You will have to be logical in your reasoning.

 

Puzzle ID:#39142
Fun:*** (2.15)
Difficulty:*** (2.82)
Category:Logic
Submitted By:Hrsemn4Aus****

 

 

 



One of the most famous logic puzzles is the "Eight Queens puzzle". The object of this puzzle is to place 8 chess queens on a standard 8x8 chessboard so that no queen can be captured by any of the other queens.

Logically, no queen can share the same row, column, or diagonal with any other queen.

Can you discover an arrangement that works?


Answer

There are actually 12 completely unique solutions to this puzzle (unique meaning not simply rotating or flipping the board).

Using a standard system of numbering rows 1-8 moving away from the player and noting columns with letters a-h, here are the solutions:

1) a1, g2, e3, h4, b5, d6, f7, c8
2) a1, g2, d3, f4, h5, b6, e7, c8
3) c1, a2, g3, e4, h5, b6, d7, f8
4) d1, a2, e3, h4, b5, g6, c7, f8
5) e1, a2, h3, d4, b5, g6, c7, f8
6) e1, a2, d3, f4, h5, b6, g7, c8
7) e1, a2, h3, f4, c5, g6, b7, d8
8) e1, c2, a3, g4, b5, h6, f7, d8
9) e1, g2, a3, d4, b5, h6, f7, c8
10) f1, a2, e3, b4, h5, c6, g7, d8
11) f1, c2, a3, h4, d5, b6, g7, e8
12) g1, a2, c3, h4, f5, d6, b7, e8

Hide




What Next?

  
  

See another brain teaser just like this one...

Or, just get a random brain teaser

If you become a registered user you can vote on this brain teaser, keep track of
which ones you have seen, and even make your own.

 





Back to Top
   


Online Now
6 users and 626 guests

Users In Chat
autumn
Follow Braingle!
Tap into all 20,000+ of our brain teasers, riddles and puzzles on your iPhone or iPad.

Braingle in the iTunes App Store
Copyright © 1999-2017 | FAQ | Widgets | Links | Green | Subscribe | Contact | Privacy | Conditions | Advertise | Braingle Time: 3:39 pm
Sign In Create a free account